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| DOI: | 10.1890/11-1250.1 |
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| Web URL(s): | http://www.esajournals.org/doi/full/10.1890/11-1250.1
Last checked: 03/19/2013
Access conditions: Item is within a limited-access website
http://www.esajournals.org/doi/pdf/10.1890/11-1250.1
Last checked: 03/19/2013
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Access conditions: Item is within a limited-access website |
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| Publication Type:
| Refereed |
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| Author(s): | Raciti, Steve M.;
Hutyra, Lucy R.;
Rao, Preeti;
Finzi, Adrien C. |
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| Author Affiliation: | Raciti, Hutyra, Rao: Department of Geography and Environment; Finzi: Department of Biology, Boston University, Boston, Massachusetts |
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| Title: | Inconsistent definitions of "urban" result in different conclusions about the size of urban carbon and nitrogen stocks |
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| Source: | Ecological Applications: A Publication of the Ecological Society of America. Vol. 22, No. 3, April 2012, p. 1015-1035. |
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| Publishing Information: | Washington, D. C.: Ecological Society of America |
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| # of Pages: | 21 |
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| Related Web URL: | http://www.esajournals.org/doi/abs/10.1890/11-1250.1
Last checked: 03/19/2013
Notes: Abstract only |
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| Keywords: | TIC Keywords: Classification; Impervious cover; Nitrogen; Urban forestry; Urban soils
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| Abstract/Contents: | "There is conflicting evidence about the importance of urban soils and vegetation in regional C budgets that is caused, in part, by inconsistent definitions of "urban" land use. We quantified urban ecosystem contributions to C stocks in the Boston (Massachusetts, USA) Metropolitan Statistical Area (MSA) using several alternative urban definitions. Development altered aboveground and belowground C and N stocks, and the sign and magnitude of these changes varied by land use and development intensity. Aboveground biomass (live trees, dbh >= 5 cm) for the MSA was 7.2 ^D+- 0.4 kg C/m2 (mean ^D+- SE), reflecting a high proportion of forest cover. Vegetation C was highest in forest (11.6 ^D+- 0.5 kg C/m2), followed by residential (4.6 ^D+- 0.5 kg C/m2), and then other developed (2.0 ^D+- 0.4 kg C/m2) land uses. Soil C (0-10 cm depth) followed the same pattern of decreasing C concentration from forest, to residential, to other developed land uses (4.1 ^D+- 0.1, 4.0 ^D+- 0.2, and 3.3 ^D+- 0.2 kg C/m2, respectively). Within a land use type, urban areas (which we defined as >25% impervious surface area [ISA] within a 1-km2 moving window) generally contained less vegetation C, but slightly more soil C, than nonurban areas. Soil N concentrations were higher in urban areas than nonurban areas of the same land use type, except for residential areas, which had similarly high soil N concentrations. When we compared our definition of urban to other commonly used urban extents (U.S. Census Bureau, Global Rural-Urban Mapping Project [GRUMP], and the MSA itself), we found that urban soil (1 m depth) and vegetation C stocks spanned a wide range, from 14.4 ^D+- 0.8 to 54.5 ^D+- 3.4 Tg C and from 4.2 ^D+- 0.4 to 27.3 ^D+- 3.2 Tg C, respectively. Conclusions about the importance of urban soils and vegetation to regional C and N stocks are very sensitive to the definition of urban used by the investigators. Urban areas, regardless of definition, are rapidly expanding in their extent; a systematic understanding of how our development patterns influence ecosystems is necessary to inform future development choices." |
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| Language: | English |
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| References: | 98 |
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| Note: | Maps
Pictures, b/w
Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Raciti, S. M., L. R. Hutyra, P. Rao, and A. C. Finzi. 2012. Inconsistent definitions of "urban" result in different conclusions about the size of urban carbon and nitrogen stocks. Ecol. Appl. 22(3):p. 1015-1035. |
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| DOI: 10.1890/11-1250.1 |
| Web URL(s):
http://www.esajournals.org/doi/full/10.1890/11-1250.1
Last checked: 03/19/2013
Access conditions: Item is within a limited-access website
http://www.esajournals.org/doi/pdf/10.1890/11-1250.1
Last checked: 03/19/2013
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2470039a |
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